Part (a) of the drawing shows a rectangular bar whose dimensions are Lo x 2Lox 3Lo. The bar is at the same constant temperature as the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the drawing. The temperature of each piece is the same as that of the original bar. (a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)? (b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?

Part (a) of the drawing shows a rectangular bar whose dimensions are Lo x 2Lox 3Lo. The bar is at the same constant temperature as the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the drawing. The temperature of each piece is the same as that of the original bar. (a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)? (b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

3
Part (a) of the drawing shows a rectangular bar whose dimensions are Lo x 2Lox 3Lo. The bar is at the same constant temperature as
the room (not shown) in which it is located. The bar is then cut, lengthwise, into two identical pieces, as shown in part (b) of the
drawing. The temperature of each piece is the same as that of the original bar.
(a) What is the ratio of the power absorbed by the two bars in part (b) of the drawing to the single bar in part (a)?
(b) Suppose that the temperature of the single bar in part (a) is 410 K. What would the temperature (in kelvins) of the room and the
two bars in part (b) have to be so that the two bars absorb the same power as the single bar in part (a)?
240
Lo
3LO
(a)
(a)P₁/P2= Number i
(b) T₂ = Number i
(b)
Units
Units

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